糖尿病酮症酸中毒的诱发因素为( )
A.感染
B.胰岛素剂量不足或治疗中断
C.含糖、脂类食物摄入过多
D.创伤、手术等应激
E.过度限制碳水化物
参考答案:A,B,C,D,E
The children have six ______ classes every weekday.
A.forty–five–minute
B.forty-five –minutes
C.forty–five minute’s
D.forty-five –minutes’
简述访问控制列表中包过滤技术的优点?